/*
 * Copyright 2005 The Apache Software Foundation Licensed under the Apache
 * License, Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law
 * or agreed to in writing, software distributed under the License is
 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */

package org.apache.ibatis.ibator.config.xml;

import java.io.IOException;
import java.io.InputStream;

import org.apache.ibatis.ibator.generator.XmlConstants;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * @author Jeff Butler
 */
public class ParserEntityResolver implements EntityResolver
{

	/**
	 *  
	 */
	public ParserEntityResolver()
	{
		super();
	}

	/*
	 * (non-Javadoc)
	 * @see org.xml.sax.EntityResolver#resolveEntity(java.lang.String,
	 * java.lang.String)
	 */
	public InputSource resolveEntity(String publicId, String systemId)
			throws SAXException, IOException
	{
		if (XmlConstants.IBATOR_CONFIG_PUBLIC_ID.equalsIgnoreCase(publicId))
		{
			InputStream is = getClass()
					.getClassLoader()
					.getResourceAsStream(
							"org/apache/ibatis/ibator/config/xml/ibator-config_1_0.dtd"); //$NON-NLS-1$
			InputSource ins = new InputSource(is);

			return ins;
		}
		else
		{
			return null;
		}
	}
}
